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7. Long - Term Debt (Details) - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Total debt $ 1,778,115 $ 1,863,916
Less current portion (495,134) (391,046)
Noncurrent portion 1,282,981 1,472,870
First Security    
Total debt 10,660 18,246
Cat Financial Services    
Total debt 30,545 40,556
Wells fargo bank    
Total debt 0 473
De Lage Landen Financial Services    
Total debt 14,567 20,581
De Lage Landen Financial Services 1    
Total debt 16,985 22,944
Phyllis Rice    
Total debt 14,146 14,146
Soyatal Mine    
Total debt 731,862 776,319
Guadalupe Mine    
Total debt $ 959,350 $ 970,651